SWR • SWC • SWD Swing Gate Operator Installation Guide - 7 - 227965 Revision X13 3-28-2008
Operator Setup (Continued)
Limit Cam Rough Adjustment
The limit cams are not preset at the factory and must
be adjusted for each installation. The limit switches are
activated by two rotating limit cams attached to the drive
shaft (see Figure 10). The Controller is factory set for right
hand installations. The top cam is for OPEN and the bottom
cam is for CLOSE. The cams fl ip their defi nition in left hand
installations (see left-right hand programming on Page 12).
1. With the gate connected to the gate operator in a mid-travel position,
the power disconnect switch turned OFF, and the torque limiter
set loose enough to slip freely, manually move the gate by hand to
its fully open position.
2. Once the gate is in the fully open position, set the OPEN limit cam so
that it has just triggered its switch (see Figure 10).
3. Manually move the gate to its fully closed position, set the CLOSE
limit cam so that it has just triggered its switch (see Figure 10).
Torque Limiter Adjustment
✓ NOTE: The open and close current sensing may need to be adjusted
before performing the following two steps. See Page 13.
This operator may be supplied with an optional torque limiter.
Before adjusting the torque limiter, make sure the gate is in
good working condition. With the gate disconnected from the
gate arm, one person should be able to move the gate by
hand. Be certain the gate moves freely and without binding
throughout its travel.
Torque limiters are set light at the factory. They must be
adjusted during installation, preferably after limit cams have
been manually set. With the gate arm and gate attached,
adjust the torque limiter tight enough to keep it from slipping
during normal operation. The inherent entrapment protection
(current sensing) feature must activate prior to any slipping of
the torque limiter. See pages 13-14 for current sense setting.
To adjust the torque limiter in models SWR and SWD:
1. Loosen the set screw on the torque limiter adjustment nut.
2. Cycle the gate open and closed while observing the torque limiter
action. TURN THE OPERATOR POWER DISCONNECT SWITCH
OFF BEFORE MAKING ANY ADJUSTMENTS.
To increase the torque, turn the adjustment nut clockwise one fl at, or
1/6 turn, at a time until desired output is obtained.
To reduce the torque, turn the adjustment nut counterclockwise one
fl at, or 1/6 turn, at a time until desired output is obtained.
3. When fi nished, tighten the set screw on the torque limiter adjustment nut.
Limit Cam Fine Adjustment
After fi nishing the rough limit cam adjustments and torque
limiter adjustment (if optional torque limiter is installed),
reposition the gate to approximately the center of travel.
1. Turn the power disconnect switch ON.
2. Stand clear of any moving parts and press the OPEN button.
3. After the gate opens, press the CLOSE button.
4. Observe the gate in both directions as it runs through each complete
cycle. Adjust the open or close limit cams again if necessary. If the
gate stops during travel, you may need to adjust the Open or Close
Current Setting or the Maximum Run Timer (see Pages 13-14).
LIMIT
CAMS (2)
RIGHT-HAND INSTALLATION
TOP CAM - OPEN LIMIT
BOTTOM CAM - CLOSE LIMIT
LEFT-HAND INSTALLATION
TOP CAM - CLOSE LIMIT
BOTTOM CAM - OPEN LIMIT
LIMIT
SWITCHES (2)
Figure 10. Setting Limit Cams
Figure 11. Adjusting the Torque Limiter
LOOSEN THE SET SCREW
ON THE ADJUSTMENT NUT
TO INCREASE TORQUE
TURN ADJUSTMENT NUT
CLOCKWISE ONE FLAT
THEN RE-TEST
ADJUSTMENT
NUT
TO DECREASE TORQUE
TURN ADJUSTMENT NUT
COUNTERCLOCKWISE
ONE FLAT THEN RE-TEST
MORELESS
TIGHTEN SET SCREW
WHEN FINISHED
CAUTION
If the operator is installed in a left-hand installation. Set the
Controller to left-hand operation BEFORE running the operator
for the fi ne setting of the limit cams. Failure to do so will
result in over-shooting the limit switches, and may cause
damage to the operator and/or gate. Refer to programming on
Page 12.